Heater attachment for ranges



May 23, 1939. H. HONER HEATER ATTACHMENT FOR RANGES Filed Aug. 5, 1937 2Sheets-Sheet l I r A a 1L my w V 1L 2% H H b May 23, 1939. H. HONER2,159,155

HEATER ATTACHMENT FOR RANGES Filed Aug. 3, 1937 2 Sheets-Sheet 2 45 /88Inventor.

5; Henry Home! Hiiorreys.

Patented May 23, 1939 UNiTED STATES PATENT OFFICE HEATER ATTACHMENT FORRANGES Application August 3, 1937, Serial No. 157,129

13 Claims.

There have been many attempts to incorporate a heater in conjunctionwith a cooking range,

such being for the purpose of heating a kitchen independent of the heatderived from the range in cooking. Some of these provide for aconstruction of the range itself whereby this forms a housing for a gasor similar radiator. In other constructions a heater has been built intoand incorporated with the range, all of which necessitates aconsiderable change in the design of the and a special constructionmaking a separate range Where it is desired to have the independentheater for a kitchen.

A main object and a characteristic of my invention is that theindependent heater is made attachment for the range and may be built onthe back of a standard range, therefore this does not necessitate anychange in the design or construction of the cooking range: and as amanufacturer as a rule does not apply the heaters to all of the rangeshe manufactures, the attachment may be made as ordered. In other words,all the ranges are made complete as to the cooking equipment, a certainnumber of the heaters 2y likewise be constructed and these may be at-=hed to the ranges as orders are received for the omhination range andheater.

Considered more specifically, a characteristic of my invention relatesto a heater preferably of a gas type which incidentally may be usedeither with gas or electric ranges. Such heater is made in the form of abox-like unit with the necessary devices for attaching the heater unitto the back of the range. Therefore the heater unit in the ordinaryinstallation of the range is adjacent the wall and hence isinconspicuous but develops suificient heat and a convection flow of hotair to adequately heat the kitchen independently of whether much heat isproduced by the range or not. In the modern design of ranges these areusually built so that but little heat is either radiated or disseminatedin the kitchen by convection, therefore usually reliance for heating thekitchen must be placed on an independent 45 heater. Various details ofthe attachable heater include the box-like unit with passages for theflow of air upwardly in which one passage is deby the back of the rangeand one wall of the inside heater unit. Other passages are deed by theheater unit and an outside casing the back and the two ends of theheater unit.

Another characteristic and feature of my invention relates to theaccessibility of the valves controlling a pilot burner and the mainburner as these may be placed in the range preferably in a space usedfor a drawer for cooking equipment. Therefore by partly opening thisdrawer, the valves are readily accessible, however the pilot light atthe beginning of cold Weather is usually lighted and burnsuninterruptedly, this being merely used to ignite the main burner whenthe cock or valve supplying gas to the burner is opened. Other detailfeatures relate to the discharge of the combustion fumes, these beingcarried from the auxiliary heater through a smoke pipe or the like andfor sake of convenience may be discharged into a fume box Which receivesthe fumes from the oven and from a trash burner Where such is used. Thusonly one smoke pipe is necessary.

My invention is illustrated in connection with the accompanyingdrawings, in which:

Fig. 1 is a perspective view of a range viewed from a front corner withthe service equipment drawer removed to show the location of the valvesfor controlling a pilot and main burner and the gas pipes leading tosuch burners.

Fig. 2 is a rear elevation of the range showing the heater attachmentand may be considered as taken in the direction of the arrow 2 of Fig.4.

Fig. 3 is a vertical longitudinal section on the line 33 of Fig. 4 inthe direction of the arrows.

Fig. 4 is an end elevation of the range, the heater and illustrating thefume box taken in the direction of the arrow 4 of Fig. 2.

Fig. 5 is a vertical transverse section on the line 5-5 of Fig. 3 in thedirection of the arrows.

In the drawings, the cooking range is designated by the assembly numeralII. This has a front designated generally by the numeral l2, a back walll3 which includes the back panel 14 which extends upwardly above thecooking top 15 of the range. In the front there is an opening or spaceit for a drawer or the like utilized for housing cooking equipment. Therange may be supported in the ordinary manner on legs 17.

The auxiliary heater is designated by the as-- sembly numeral and may beconsidered as having an outside housing formed by the back wall .25, aclosed end 21, an opposite end 28 hav ing a door opening 29 with a door33. The other side of the heater unit is defined by the back I3, theends being secured to this back wall of the range in any suitablemanner. This leaves a boxlike construction open at the bottom indicatedat 3| and having openings at the top hereinunder defined. The insideheating unit designated by the assembly numeral may be considered ashaving an inner longitudinal wall 36, an outer longitudinal wall 31, anend 38, an opposite end 39 which is provided with a casting 48 or thelike with a window M and an ignition opening 42, this being closable bya damper cover 43. The heater proper has a closed horizontal top wall44, this having an opening 45 from which a fume pipe 4% extendsvertically. There is also a bottom wall 41, this wall having openingsfor the burners 48, of which two are shown (not Fig. 5), these beingprovided with burner tips 49.

The interior construction of the heater unit 85 includes a verticalbaffle 58 extending between the walls 36 and 31 and upwardly from thebottom 4'! at the end of the burners and a horizontal lower baflle 5|leaving an opening 52 at one end. This baffle is illustrated as havingan inclined section 53 and a horizontal section 54. Above this there isan intermediate baffle 55 leaving a space 56 at one end and thereabovethere is an upper baffie 51, there being a space 58 at one end. Thisbafiie has an upturned end 59 secured at 68 to the top 44. It will beunderstood that these three bafiies extend between the vertical walls 38and 31.

This construction with the air openings at the burners provides a firstcombustion. space 65 above the burners leading to a first lower space 88for the passage of flames. Above this there is a lower intermediatespace 61, an upper intermediate space 68 and a top space 69. The flow ofthe flames and the combustion gases is indicated by the arrows, theproducts of combustion passing outwardly through the pipe 46. Thepassages for the heated air include a longitudinal passage I5 betweenthe back wall I3 of the range and. the wall 36 of the inside heatingunit, the cold air entering at the open bottom 3! and beingdischarged atthe long opening I6. There is also another long air passage 11 definedby the back wall 25 of the heater unit and the wall 31 of the insideheater. This also receives the cold air through the open bottom 3| anddischarges it at the opening I8. At each end there is also a vertical.passage such as'I9 defined by the end wall 27 and the end 38 of theinside unit, the cold air entering at the bottom and being discharged atthe opening 88 at the top. Another air space 8! is back of the end wall28 having the door, this being normally closed and has an outlet 82 atthe top. It will thus be seen that an adequate heating surface isprovided for the air flowing upwardly through the various spaces andthis is discharged at the top and thus disseminated through the kitchen.

Another feature of my invention relates to the convenience for lightingand controlling the heater in that a gas supply manifold indicated at 85of Fig. 1 may be provided in the compartment E8 which as abovedesignated is for a drawer or the like, in which cooking equipment maybe stored. The pilot gas pipe 86 leads from the manifold to the pilotburner and this has a control cook 81, the gas pipe 88 to the main[burner has its own control cook 89. These pipes lead downwardly to thebottom of the range proper and are then carried rearwardly to theburners in any suitable manner. The burners and the air supply thereforare of the usual construction. It will therefore be seen that a controlof the heater after igniting the pilot flame may be entirely from thefront of the range, it being only necessary to open the service drawerto afford access to the valve 89.

The fume outlet pipe 46 may be readily connected to a fume boxdesignated I88 which is part of the equipment of the range, this boxbeing indicated as having a bottom wall I8I, a sloping top I82, oppositeends I83 and I84. It also has a vertical back wall I85 and a front wallI86. The main smoke or flue pipe I8'I takes off from the upper part ofthe fume box and leads to a chimney or the like. The flue pipe 46 isillustrated as entering through the bottom I8I. The particular fume boxillustrated has a connection I 88 from the oven of the range or otherparts of the range proper from which it is desired to conduct the fumesout of doors and there is also illustrated a connection I89 to a trashburner or the like built into the range as many ranges have thisequipment. With this construction using the fume box I88 above theheater attachment, such box causes a lateral spreading of the hot air aswell as functioning to carry off the fumes from the heater.

It is believed it will be therefore obvious that this heater in the formof a gas heater may be attached to a cooking range whether this is forinstance a gas, electric or coal operated range. It is also obvious thatfor conditions in which electric current is comparatively inexpensive,an

electric heating unit could be substituted for the gas and built in asan attachment on the back of the range.

Various changes may be made in the details of the construction withoutdeparting from the spirit or scope of the invention as defined by theappended claims.

I claim:

1. A cooking range having a back wall combined with a heater assembly,said assembly having a back wall spaced from the back wall of the rangeby two vertical end walls, said end walls being attached to the backwall of the range, an inside heating unit having inner and outer wallsparallel to the back wall of the range and two end walls and having abottom and a top with a fume pipe connected to the top and having aheating unit in the bottom, there being a space between the inner wallof the inside heater and the back wall of the range, a second spacebetween the outer wall of the inside heater and the back wall of theheater assembly and two end spaces adjacent the end walls of the insideheater, said spaces being adapted for the upflow of air heated by theinside heater.

2. A cooking range as claimed in claim 1, the inside heater having as aheating unit gas burners with spaces for the inflow of air, a series ofbaffle plates connecting the inner and outer walls of the inside heaterand providing end spaces to develop a zig-zag path for the products ofcombustion from the burner to the fume pipe.

3. A cooking range as claimed in claim 1, the range having a spaceopening from the front with a gas pipe having a valve, the valve beinglocated in the said space, the heater unit having a gas burner and thesaid pipe communicating with said burner.

4. In a device as described, an auxiliary heater having a housing with aback and two end walls and open at the bottom and top, an inside heatingunithaving inner and outer walls spaced apart and also spaced from theback wall of the housing, the housing and inside heater having means forattachment to the imperforate back wall of a cooking range and therebyprovide a first space between the heater unit and such back wall and asecond space between the heater unit and the imperforate back wall ofthe housing for upflow of heated air.

5. In a device as described and claimed in claim 4, the inside heaterunit having two end walls spaced from the end walls of the housinghaving a closed bottom except for a gas burner with an air inlet andbeing provided with a closed top with a fume pipe, there being spacesfor upflow of heated air between the ends of the heater unit and theends of the housing.

6. In a device as described, an auxiliary heater having a housing with avertical. backwall and vertical end walls open at the top and bottom,the end walls being adapted for attachment to the back Wall of a cookingrange, an inside heat er unit having inner and outer walls spaced apartand parallel to the back wall of the housing but spaced therefrom, theheater unit also having vertical end walls spaced inwardly from the endwalls of the housing having a closed top with a fume pipe and a closedbottom except for gas burners with an air inlet whereby spaces forupflow of heated air are provided between the heater unit and the wallsof the housing and between the heater unit and the imperforate back wallof a cooking range to which the heater unit is attached.

'7. A cooking range having a back wall, a fume box positioned back ofthe said back wall and spaced therefrom with connections to remove fumesfrom the range and an outlet or discharge fiue pipe combined with anauxiliary heater having an outer casing and inner heating unit, thecasing having means for attachment to the back of the range andpositioned below the fume box, a heater element in the unit, the casingand the unit providing a space for the upflow of air to be heated, oneof said spaces being between the back wall of the range and the heatingunit, the space between the fume box and the back wall of the rangebeing adapted for the upflow of the heated air from said latter space,the fume box forming a deflecting medium for the hot air from the otherspaces.

8. A cooking range having a back wall, a fume box positioned back ofsaid wall and spaced therefrom with connections to remove fumes from therange and an outlet or discharge flue pipe combined with an auxiliaryheater, said heater having a housing with a back Wall parallel to theback of the range and two side walls connected to the back wall of therange, an inside heater having sides spaced apart in parallel to theback of the housing and to the back of the range and having end wallsspaced from the end walls of the housing, thereby providing spaces forupflow of air, one of said spaces being defined by the back wall of therange and one of the walls of the heater, the heater having a flue pipeextending into the fume box, the space between the fume box and the backwall of the range being adapted for upward flow of hot air, the fume boxbeing positioned relative to the heater to deflect the air laterallyflowing upwardly through the other spaces or passages.

9. A cooking range having a back wall and an open space from the frontadapted to receive a drawer or the like combined with an auxiliary gasheater attached to the back wall of the range with gas pipes secured tothe range and having valves positioned in the said space whereby saidvalves may be readily accessible from the front of the range.

10. A cooking range having a cooking top and an imperforate back wallextending downwardly from the rear edge of the cooking top combined witha heater assembly, said assembly having an internal heater with wallsand surrounding casing walls defining between the casing Walls and theinternal heater passages for air to be heated, one of said passagesbeing defined by the internal heater and the imperforate back wall ofthe range.

11. A cooking range as claimed in claim 10, the internal heater having agas burner adjacent the bottom and a fume pipe at the top, the rangehaving a fume box positioned back of the back wall and having a smokeoutlet, the said fume pipe entering the said fume box.

12. A cooking range having a cooking top and an imperforate back wallextending downwardly from the rear edge of the cooking top combined witha heater attachment, said attachment having a casing structure attachedto the said back wall and open at the bottom and top, an internal heaterlocated within the casing structure and provided with a gas heatingelement in the bottom with a fume outlet at the top, there being spacesbetween the internal heater and the easing structure for the upflow ofheated air and a space between the imperforate back wall of the rangeand the internal heater for the upflow of heated air.

13, A cooking range as claimed in claim 12, the range having a fume boxpositioned back of the back wall of the range and spaced therefrom andhaving fume connections from an oven and smoke connections from a trashburner and with a smoke or flue pipe outlet at the top, the fume pipe ofthe heater being connected to and discharging into the said fume box.

HENRY HONER.

